Download or read book Developmental Programming and Life Course Regulation of Skeletal Muscle Inflammation and Oxidative Function written by Chantal A. Pileggi and published by . This book was released on 2016 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Skeletal muscle is continuously adapting in size and oxidative capacity to meet the physical and metabolic demands of the organism. This commences prior to birth with exposure to adverse nutrition in utero having a lifelong adverse impact on skeletal muscle health. After birth, through to old age, periods of inadequate diet and activity significantly impair muscle mass and oxidative capacity. There are many cellular mechanism that mediate these complex adverse events, however these appear to be clustered around intracellular inflammation and disordered regulation of mitochondrial function. The aim of this thesis was to undertake analysis of potential molecular mechanisms that are integral to the regulation of inflammation, oxidative function and oxidative stress in the development and maintenance of lifelong skeletal muscle function. Poor maternal health and diet during fetal development elicits permanent changes in skeletal muscle structure and function. Therefore, these studies commenced with the use of a rodent model to examine the intergenerational effects of a maternal high-fat (HF) diet on offspring skeletal muscle inflammation and oxidative function. First, to determine the effects of a maternal HF diet on offspring skeletal muscle inflammation, dams were fed a HF diet during pregnancy and lactation vs. standard chow diet, with or without maternal supplementation of conjugative linoleic acid (CLA). HF offspring displayed elevated intramuscular inflammatory responses, and increased expression of catabolic factors, which was partially reversed with the maternal supplementation of the antiinflammatory CLA. The consequential actions of inflammation also include alterations in mitochondrial function. Therefore, subsequent studies targeted analysis of the regulation of the mitochondrial genome, electron transport system (ETS) activity, free radical production and mitochondrial turnover. First, in response to the maternal HF diet, the mitochondrial transcription factors, NRF1 and mtTFA, were down-regulated in HF offspring. There was also a decrease in the expression of downstream target genes encoding the mitochondrial ETS respiratory complex subunits. These alterations in gene expression translated into a downregulation in protein abundance of the complex I subunit in HF offspring, paralleled by decreased maximal catalytic linked activity of complex I and III. To further characterise mitochondrial function, high-resolution respirometry was used to examine skeletal muscle respiration rates and metabolic flexibility in offspring born to dams fed a HF diet. Consistent with the gene and enzyme data, HF offspring displayed blunted mitochondrial oxidation, but only of carbohydrate based substrates. Conversely, oxidation of lipid-based substrates remained intact between groups. Taken together, these studies demonstrate that in utero exposure to a maternal HF diet has lifelong implications on intramuscular inflammation and oxidative function, contributing to an increased risk of developing metabolic disease in adulthood. A model of short-term limb immobilisation was used in a clinical study to quantify the impact of physical inactivity on mitochondrial function, with additional analysis of mitochondrial ROS production and mitochondrial turnover. Two weeks of limb immobilisation had no effect on mitochondrial respiration or H2O2 emissions; whereas returning to normal ambulation for 2 weeks and a further 2 weeks of resistance exercise training resulted in robust increases in H2O2 emission from mitochondria and NADPH oxidase. Whilst H2O2 was not increased with immobolisation, a key mitochondria associated apoptotic factor (AIFM2) was increased, suggesting an upregulation of mitophagy following muscle disuse. This was normalised with normal ambulation and resistance training. Similarly, the expression of fission and fusion factors (OPA1, Fis1, and MFN) are also increased with the resumption of normal, indicative of increased mitochondrial turnover. Collectively, the increase in H2O2 emissions combined with increased expression of fission and fusion factors following the resistance training period suggest that increases in ROS production is a feature of the adaptive responses, rather than being increased during a short immobilisation period that results in muscle loss. The completed sequence of studies highlight the complex regulation of skeletal muscle mass and oxidative function, both as a consequence of adverse nutrition during the in utero phase of life and subsequent physical inactivity in later adulthood. The significance of in utero programming for lifelong impact on oxidative function suggests greater emphasis on optimizing pregnancy health and the subsequent identification on the epigenetic mechanisms of action. How this may further translate to increased risks during later life remains to be determined. Notably, the robustness of the mitochondrial adaptations to resistance exercise in adulthood points to the importance of examining how this can be applied to improving metabolic function in those at risk of metabolic disease. These studies only continue to hint at the complexity of the mitochondria and its regulation in skeletal muscle
Download or read book Exercise Metabolism written by Mark Hargreaves and published by Human Kinetics. This book was released on 2006 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference for biochemists, sport nutritionists, exercise physiologists, and graduate students in those disciplines. Provides information on the metabolic processes that take place during exercise, examining in depth the mobilization and utilization of substrates during physical activity. Focuses primarily on the skeletal muscle, but also discusses the roles of the liver and adipose tissue. Annotation copyright by Book News, Inc., Portland, OR
Download or read book Muscle Regeneration written by Alexander Mauro and published by Raven Press (ID). This book was released on 1979 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insulin Signaling written by George Grunberger and published by CRC Press. This book was released on 2003-09-02 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from the leading researchers in the field, this volume brings together the latest studies on insulin action and signal transduction to provide a state-of-the-art reference for graduate researchers and students in diabetes and endocrinology. Insulin Signaling is a comprehensive study of the regulation of molecular events by insulin at a cellular level, utilizing experimental techniques ranging from molecular systems through phenotypic expression in transgenic and knockout models.
Download or read book Skeletal Muscle Circulation written by Ronald J. Korthuis and published by Morgan & Claypool Publishers. This book was released on 2011 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this treatise is to summarize the current understanding of the mechanisms for blood flow control to skeletal muscle under resting conditions, how perfusion is elevated (exercise hyperemia) to meet the increased demand for oxygen and other substrates during exercise, mechanisms underlying the beneficial effects of regular physical activity on cardiovascular health, the regulation of transcapillary fluid filtration and protein flux across the microvascular exchange vessels, and the role of changes in the skeletal muscle circulation in pathologic states. Skeletal muscle is unique among organs in that its blood flow can change over a remarkably large range. Compared to blood flow at rest, muscle blood flow can increase by more than 20-fold on average during intense exercise, while perfusion of certain individual white muscles or portions of those muscles can increase by as much as 80-fold. This is compared to maximal increases of 4- to 6-fold in the coronary circulation during exercise. These increases in muscle perfusion are required to meet the enormous demands for oxygen and nutrients by the active muscles. Because of its large mass and the fact that skeletal muscles receive 25% of the cardiac output at rest, sympathetically mediated vasoconstriction in vessels supplying this tissue allows central hemodynamic variables (e.g., blood pressure) to be spared during stresses such as hypovolemic shock. Sympathetic vasoconstriction in skeletal muscle in such pathologic conditions also effectively shunts blood flow away from muscles to tissues that are more sensitive to reductions in their blood supply that might otherwise occur. Again, because of its large mass and percentage of cardiac output directed to skeletal muscle, alterations in blood vessel structure and function with chronic disease (e.g., hypertension) contribute significantly to the pathology of such disorders. Alterations in skeletal muscle vascular resistance and/or in the exchange properties of this vascular bed also modify transcapillary fluid filtration and solute movement across the microvascular barrier to influence muscle function and contribute to disease pathology. Finally, it is clear that exercise training induces an adaptive transformation to a protected phenotype in the vasculature supplying skeletal muscle and other tissues to promote overall cardiovascular health. Table of Contents: Introduction / Anatomy of Skeletal Muscle and Its Vascular Supply / Regulation of Vascular Tone in Skeletal Muscle / Exercise Hyperemia and Regulation of Tissue Oxygenation During Muscular Activity / Microvascular Fluid and Solute Exchange in Skeletal Muscle / Skeletal Muscle Circulation in Aging and Disease States: Protective Effects of Exercise / References
Download or read book Muscle Cell and Tissue written by Kunihiro Sakuma and published by BoD – Books on Demand. This book was released on 2018-10-10 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to complete tissue regeneration, various cells (neuronal, skeletal and smooth) interact coordinately with each other. This book, Muscle Cell and Tissue - Current Status of Research Field, deals with current progress and perspectives in a variety of topics on the skeletal and smooth muscle, stem cells, regeneration, disease or therapeutics. Novel applications for cell and tissue engineering including cell therapy, tissue models and disease pathology modeling are introduced. This book also deals with the differentiation/de-differentiation process of vascular smooth muscle cells in health and disease. Furthermore, natural products to reverse metabolic syndromes are descriptively reviewed. These chapters can be interesting for graduate students, teachers, physicians, executives and researchers in the field of molecular biology and regenerative medicine.
Download or read book Building the Most Complex Structure on Earth written by Nelson R Cabej and published by Newnes. This book was released on 2013-04-01 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building the Most Complex Structure on Earth provides readers with a basic biological education an easy and understandable introduction into a new epigenetic theory of development and evolution. This is a novel theory that describes the epigenetic mechanisms of the development and evolution of animals and explains the colossal evolution and diversification of animals from a new post-genetic perspective. Modern biology has demonstrated the existence of a common genetic toolkit in the animal kingdom, but neither the number of genes nor the evolution of new genes is responsible for the development and evolution of animals. The failure to understand how the same genetic toolkit is used to produce millions of widely different animal forms remains a perplexing conundrum in modern biology. The novel theory shows that the development and evolution of the animal kingdom are functions of epigenetic mechanisms, which are the competent users of the genetic toolkit. Provides a comprehensive view of the epigenetic aspects of reproduction, development, and evolution. Highly rigorous, but simple enough for readers with only a basic knowledge of biology.
Download or read book Skeletal Muscle Structure Function and Plasticity written by Richard L. Lieber and published by LWW. This book was released on 2010 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: In its Third Edition, this text addresses basic and applied physiological properties of skeletal muscle in the context of the physiological effects from clinical treatment. Anyone interested in human movement analysis and the understanding of generation and control from the musculoskeletal and neuromuscular systems in implementing movement will find this a valuable resource. A highlight color has been added to this edition's updated figures and tables, and the color plates section has been doubled, ensuring that all figures that need color treatment to clarify concepts receive this treatment. A new Clinical Problem feature uses concepts presented in each chapter in the context of a specific clinical case--for example, a spinal cord injury, a sports accident, or rehabilitation after bed rest.
Download or read book A Life Course Approach to Healthy Ageing written by Diana Kuh and published by Oxford University Press, USA. This book was released on 2014 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title investigates the lifetime determinants of healthy ageing and their implications for policy and practice, bringing together authorities in ageing research and knowledge transfer from across the world.
Download or read book Disorders of Voluntary Muscle written by George Karpati and published by Cambridge University Press. This book was released on 2001-07-12 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rewritten and redesigned, this remains the one essential text on the diseases of skeletal muscle.
Download or read book Antioxidants in Sport Nutrition written by Manfred Lamprecht and published by CRC Press. This book was released on 2014-09-17 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of antioxidants in sports is controversial due to existing evidence that they both support and hinder athletic performance. Antioxidants in Sport Nutrition covers antioxidant use in the athlete ́s basic nutrition and discusses the controversies surrounding the usefulness of antioxidant supplementation. The book also stresses how antioxidants may affect immunity, health, and exercise performance. The book contains scientifically based chapters explaining the basic mechanisms of exercise-induced oxidative damage. Also covered are methodological approaches to assess the effectiveness of antioxidant treatment. Biomarkers are discussed as a method to estimate the bioefficacy of dietary/supplemental antioxidants in sports. This book is useful for sport nutrition scientists, physicians, exercise physiologists, product developers, sport practitioners, coaches, top athletes, and recreational athletes. In it, they will find objective information and practical guidance.
Download or read book AMP Activated Protein Kinase Signalling written by Dietbert Neumann and published by MDPI. This book was released on 2019-03-14 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from a kinase of interest, AMP-activated protein kinase (AMPK) has gone far beyond an average biomolecule. Being expressed in all mammalian cell types and probably having a counterpart in every eukaryotic cell, AMPK has attracted interest in virtually all areas of biological research. Structural and biophysical insights have greatly contributed to a molecular understanding of this kinase. From good old protein biochemistry to modern approaches, such as systems biology and advanced microscopy, all disciplines have provided important information. Thus, multiple links to cellular events and subcellular localizations have been established. Moreover, the crucial involvement of AMPK in human health and disease has been evidenced. AMPK accordingly has moved from an interesting enzyme to a pharmacological target. However, despite our extensive current knowledge about AMPK, the growing community is busier than ever. This book provides a snapshot of recent and current AMPK research with an emphasis on work providing molecular insight, including but not limited to novel physiological and pathological functions, or regulatory mechanisms. Up-to-date reviews and research articles are included.
Download or read book Educating the Student Body written by Committee on Physical Activity and Physical Education in the School Environment and published by National Academies Press. This book was released on 2013-11-13 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical inactivity is a key determinant of health across the lifespan. A lack of activity increases the risk of heart disease, colon and breast cancer, diabetes mellitus, hypertension, osteoporosis, anxiety and depression and others diseases. Emerging literature has suggested that in terms of mortality, the global population health burden of physical inactivity approaches that of cigarette smoking. The prevalence and substantial disease risk associated with physical inactivity has been described as a pandemic. The prevalence, health impact, and evidence of changeability all have resulted in calls for action to increase physical activity across the lifespan. In response to the need to find ways to make physical activity a health priority for youth, the Institute of Medicine's Committee on Physical Activity and Physical Education in the School Environment was formed. Its purpose was to review the current status of physical activity and physical education in the school environment, including before, during, and after school, and examine the influences of physical activity and physical education on the short and long term physical, cognitive and brain, and psychosocial health and development of children and adolescents. Educating the Student Body makes recommendations about approaches for strengthening and improving programs and policies for physical activity and physical education in the school environment. This report lays out a set of guiding principles to guide its work on these tasks. These included: recognizing the benefits of instilling life-long physical activity habits in children; the value of using systems thinking in improving physical activity and physical education in the school environment; the recognition of current disparities in opportunities and the need to achieve equity in physical activity and physical education; the importance of considering all types of school environments; the need to take into consideration the diversity of students as recommendations are developed. This report will be of interest to local and national policymakers, school officials, teachers, and the education community, researchers, professional organizations, and parents interested in physical activity, physical education, and health for school-aged children and adolescents.
Download or read book Mechanisms of Insulin Action written by Alan R. Saltiel and published by Springer Science & Business Media. This book was released on 2007-10-05 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 18 million people in the United States have diabetes mellitus, and about 90% of these have the type 2 form of the disease. This book attempts to dissect the complexity of the molecular mechanisms of insulin action with a special emphasis on those features of the system that are subject to alteration in type 2 diabetes and other insulin resistant states. It explores insulin action at the most basic levels, through complex systems.
Download or read book Glucocorticoid Signaling written by Jen-Chywan Wang and published by Springer. This book was released on 2015-07-27 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely volume provides a comprehensive overview of glucocorticoids and their role in regulating many aspects of physiology and their use in the treatment of disease. The book is broken into four sections that begin by giving a general introduction to glucocorticoids and a brief history of the field. The second section will discuss the effects of glucocorticoids on metabolism, while the third section will cover the effects of glucocorticoids on key tissues. The final section will discuss general topics, such as animal models in glucocorticoid research and clinical implications of glucocorticoid research. Featuring chapters from leaders in the field, this volume will be of interest to both researchers and clinicians.
Download or read book Voltage Gated Sodium Channels written by Peter C. Ruben and published by Springer Science & Business Media. This book was released on 2014-04-15 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of techniques to study ion channels have been developed since the electrical basis of excitability was first discovered. Ion channel biophysicists have at their disposal a rich and ever-growing array of instruments and reagents to explore the biophysical and structural basis of sodium channel behavior. Armed with these tools, researchers have made increasingly dramatic discoveries about sodium channels, culminating most recently in crystal structures of voltage-gated sodium channels from bacteria. These structures, along with those from other channels, give unprecedented insight into the structural basis of sodium channel function. This volume of the Handbook of Experimental Pharmacology will explore sodium channels from the perspectives of their biophysical behavior, their structure, the drugs and toxins with which they are known to interact, acquired and inherited diseases that affect sodium channels and the techniques with which their biophysical and structural properties are studied.
Download or read book Muscle 2 Volume Set written by Joseph Hill and published by Academic Press. This book was released on 2012-08 with total page 1469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Muscle: Fundamental Biology and Mechanisms of Disease will be the first reference covering cardiac, skeletal, and smooth muscle in fundamental, basic science, translational biology, disease mechanism, and therapeutics. Currently there are no publications covering the science behind the medicine, as the majority of books are 90% clinical and 10% science. Muscle: Fundamental Biology and Mechanisms of Disease will discuss myocyte biology, also known as muscle cell biology, providing information about the science behind clinical work and therapeutics with a 90% science and 10% clinical focus. A needed resource for researchers, clinical professionals, postdocs, and graduate students, this publication will further discuss basic biology development and physiology, how processes go awry in disease states, and how the defective pathways are targeted for therapy. This book will assist both the new and experienced clinician's and researcher's need for science translation of background research into clinical applications, bridging the gap between research and clinical knowledge.
